any old steel frame from the tip.to match the wheels you have. As long as it has proper drop outs. fixed needs that proper hub or just bung on a fixed cog on a normal screw on and beat a lockring on afterwards.

It's Redox rust converter, rust eater. I lent it to my mate last year when his commuter was nicked and he painted it on the scabby bits, now it looks worse than when he started. Are you coming to the pootle on the 14th? I should be coming over from Doncaster.